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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="4gusigk" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板,烽火</p><p><span>***更新：</span>2020-07-28 18:49:27</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ka24om2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市騰云科創(chuàng)信息咨詢有限公司</a></p><p><span>聯(lián)系人：</span>夏永 </p><p><span>郵箱: </span>87993378@qq.com</p><p><span>電話: </span>16625147809</p><p><span>傳真: </span>1550_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>1550-2042477</p><p><span>地址: </span>沙井街道蠔四社區(qū)街尾塘一巷5號幸福家園A棟、B棟、C棟、D棟D棟110D</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="02aou4o" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ocs2we4" class="box"><p><p> 電力網(wǎng)的發(fā)展對電力系統(tǒng)**通信網(wǎng)提出了更高的要求, 電力通信要求確保電能的生產(chǎn)、輸送、分配、消費在瞬間是同時完成的。為了保證電網(wǎng)安全、經(jīng)濟(jì)地運行, 必須配置調(diào)度、保護(hù)、遠(yuǎn)程控制等系統(tǒng)。這些系統(tǒng)的所有信息傳輸都必須由通信系統(tǒng)提供通道。由此可見, 通信在電力系統(tǒng)中的作用是非常關(guān)鍵的。隨著經(jīng)濟(jì)的發(fā)展, 電力系統(tǒng)容量急劇增加, 隨之而來的是輸電超高壓化, 接入業(yè)務(wù)多樣化。 </p> <p> 電力系統(tǒng)一旦發(fā)生故障, 如果通信不暢, 不能及時調(diào)度指揮,就會擴(kuò)大***范圍, 造成大面積停電甚至系統(tǒng)瓦解,不*經(jīng)濟(jì)損失十分慘重, 而且會給社會造成嚴(yán)重影響。因此電力系統(tǒng)的通信要有非常高的可靠性。由于SDH技術(shù)具有特有的優(yōu)勢, 采用SDH技術(shù)組網(wǎng)不*適合現(xiàn)代通信發(fā)展的需要,而且特別適合電力系統(tǒng)通信的需要。SDH網(wǎng)是由不同類型的SDH網(wǎng)元設(shè)備, 如終端復(fù)用設(shè)備(TM )、再生器(REG)、分插復(fù)用設(shè)備(ADM )、數(shù)字交叉連接(DXC) 設(shè)備等, 通過光纜互連而成的，重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板, 由這些網(wǎng)元設(shè)備完成SDH 網(wǎng)的上下業(yè)務(wù)、交叉連接業(yè)務(wù)、網(wǎng)絡(luò)故障自愈等傳送功能。SDH網(wǎng)的網(wǎng)絡(luò)節(jié)點(網(wǎng)元) 和傳輸線路的幾何排列就構(gòu)成了網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)，重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板，重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板。網(wǎng)絡(luò)的基本拓?fù)浣Y(jié)構(gòu)大致有這樣幾種方式: 鏈形、星形、樹形、環(huán)形和網(wǎng)格形等。隨著網(wǎng)絡(luò)傳輸技術(shù)的不斷發(fā)展, 電力系統(tǒng)中基于寬帶數(shù)據(jù)網(wǎng)的應(yīng)用也越來越多。重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105205079/5635847.jpg"></div><p> SDH網(wǎng)絡(luò)的常見網(wǎng)元和功能 </p> <p> REG——再生中繼器 </p> <p> 光傳輸網(wǎng)的再生中繼器有兩種，一種是純光的再生中繼器，主要進(jìn)行光功率放大以延長光傳輸距離；另一種是用于脈沖再生整形的電再生中繼器，主要通過光/電變換、電信號抽樣、判決、再生整形、電/光變換，以達(dá)到不積累線路噪聲，保證線路上傳送信號波形的完好性。此處講的是后一種再生中繼器，REG是雙端口器件，只有兩個線路端口——W、E。 </p> <p> 它的作用是將w/e側(cè)的光信號經(jīng)O/E、抽樣、判決、再生整形、E/O在e或w側(cè)發(fā)出。注意到?jīng)]有，REG與ADM相比*少了支路端口，所以ADM若本地不上/下話路（支路不上/下信號）時完全可以等效一個REG。 </p> <p> 真正的REG只需處理STM-N幀中的RSOH，且不需要交叉連接功能（w—e直通即可），而ADM和TM因為要完成將低速支路信號分/插到STM-N中，所以不*要處理RSOH，而且還要處理MSOH；另外ADM和TM都具有交叉復(fù)用能力（有交叉連接功能），因此用ADM來等效REG有點大材小用了。重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板管理單元指針位于STM-N幀中第4行的***到第9×N列。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg"></div><p> 二纖雙向復(fù)用段保護(hù)環(huán)將每根光纖的前一半時隙傳送主用業(yè)務(wù)，后一半時隙傳送額外業(yè)務(wù)，也就是說一根光纖的保護(hù)時隙用來保護(hù)另一根光纖上的主用業(yè)務(wù)。業(yè)務(wù)容量為四纖雙向復(fù)用段保護(hù)環(huán)的1/2，即M/2（STM-N），其中M是節(jié)點數(shù)。它在組網(wǎng)中使用得較多，主要用于622M和2.5G系統(tǒng)，也是適用于業(yè)務(wù)分散的網(wǎng)絡(luò)。 </p> <p> 二纖單向通道保護(hù)環(huán)和二纖雙向復(fù)用段保護(hù)環(huán)的比較 </p> <p> 業(yè)務(wù)容量（*考慮主用業(yè)務(wù)） </p> <p> 單向通道保護(hù)環(huán)的比較大業(yè)務(wù)容量是STM-N，二纖雙向復(fù)用段保護(hù)環(huán)的業(yè)務(wù)容量為M/2 ×STM-N（M是環(huán)上節(jié)點數(shù)）。 </p> <p> 復(fù)雜性 </p> <p> 二纖單向通道保護(hù)環(huán)，無論從實現(xiàn)控制的復(fù)雜性，還是設(shè)備的開發(fā)和制作難度來說，都是各種倒換環(huán)中**簡單的。由于它不涉及APS的協(xié)議處理過程，因而業(yè)務(wù)倒換時間也**短。二纖雙向復(fù)用段保護(hù)環(huán)的控制邏輯和設(shè)備開發(fā)制作則是各種倒換環(huán)中**復(fù)雜的。 </p> <p> 兼容性 </p><p> SDH的特點 </p> <p> 1）SDH傳輸系統(tǒng)在國際上有統(tǒng)一的幀結(jié)構(gòu)數(shù)字傳輸標(biāo)準(zhǔn)速率和標(biāo)準(zhǔn)的光路接口，使網(wǎng)管系統(tǒng)互通，因此有很好的橫向兼容性，它能與現(xiàn)有的PDH完全兼容，并容納各種新的業(yè)務(wù)信號，形成了全球統(tǒng)一的數(shù)字傳輸體制標(biāo)準(zhǔn)，提高了網(wǎng)絡(luò)的可靠性； </p> <p> （2）SDH接入系統(tǒng)的不同等級的碼流在幀結(jié)構(gòu)凈負(fù)荷區(qū)內(nèi)的排列非常有規(guī)律，而凈負(fù)荷與網(wǎng)絡(luò)是同步的，它利用軟件能將高速信號一次直接分插出低速支路信號，實現(xiàn)了一次復(fù)用的特性，克服了PDH準(zhǔn)同步復(fù)用方式對全部高速信號進(jìn)行逐級分解然后再生復(fù)用的過程，由于**簡化了DXC，減少了背靠背的接口復(fù)用設(shè)備，改善了網(wǎng)絡(luò)的業(yè)務(wù)傳送透明性； </p> <p> （3）由于采用了較先進(jìn)的分插復(fù)用器（ADM）、數(shù)字交叉連接（DXC）、網(wǎng)絡(luò)的自愈功能和重組功能就顯得非常強(qiáng)大，具有較強(qiáng)的生存率。因SDH幀結(jié)構(gòu)中安排了信號的5％開銷比特，它的網(wǎng)管功能顯得特別強(qiáng)大，并能統(tǒng)一形成網(wǎng)絡(luò)管理系統(tǒng)，為網(wǎng)絡(luò)的自動化、智能化、信道的利用率以及降低網(wǎng)絡(luò)的維管費和生存能力起到了積極作用；它能增強(qiáng)網(wǎng)監(jiān)，運行管理和自動配置功能，優(yōu)化了網(wǎng)絡(luò)性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg"></div><p> 電力通信**網(wǎng)的構(gòu)建思路 </p> <p> 電力通信網(wǎng)可以在樞紐節(jié)點、大型變電站、行政中心采用標(biāo)準(zhǔn)的STM 21、STM 24 或STM 216 傳輸設(shè)備疊加接入模塊的方式; 在中小型變電站、鄉(xiāng)鎮(zhèn)供電所等業(yè)務(wù)量較少的節(jié)點采用單獨簡單配置的STM-21網(wǎng)元設(shè)備組網(wǎng)或STM-21網(wǎng)元設(shè)備疊加接入模塊的方式; 接入模塊解決話音、V. 24/V. 35、2W/4W、E&M 等窄帶業(yè)務(wù)接入, 而10Mb/s、100Mb/s等寬帶數(shù)據(jù)接入則在SDH傳輸平臺上提供,這樣能夠充分保證帶寬和服務(wù)質(zhì)量(QoS)。環(huán)網(wǎng)光纜建設(shè)綜合考慮通信、計算機(jī)網(wǎng)絡(luò)及有線電視傳輸?shù)男枰?采用不等芯數(shù)配置, 做到既滿足要求, 又節(jié)省投資?？紤]到全網(wǎng)的性能價格比, 比較好采用系列化較完整的產(chǎn)品, 對不同節(jié)點選用不同配置的網(wǎng)元設(shè)備, 并能進(jìn)行統(tǒng)一網(wǎng)管, 以實現(xiàn)有效的分層管理, 便于故障快速定位, 從而有效減輕維護(hù)工作量。隨著網(wǎng)絡(luò)規(guī)模的擴(kuò)大, 應(yīng)實現(xiàn)多廠家的設(shè)備管理, 要求網(wǎng)管支持標(biāo)準(zhǔn)接口, 即網(wǎng)管系統(tǒng)具備開放性。 </p> <p> 通過基于SDH 的MSTP, 可支持全業(yè)務(wù), 局域網(wǎng)互聯(lián)帶寬可按VC212×N (1～ 48) 平滑設(shè)置, 可利用SDH 層的網(wǎng)絡(luò)自愈功能實現(xiàn)電信級的保護(hù), 統(tǒng)一的網(wǎng)管方便網(wǎng)絡(luò)維護(hù)。它完善地解決所有業(yè)務(wù)信號的接入和傳輸, 且相對于其它的組網(wǎng)方式具有其明顯的優(yōu)勢。星形網(wǎng)絡(luò)拓?fù)涫菍⒕W(wǎng)中一網(wǎng)元做為中心節(jié)點設(shè)備與其他各網(wǎng)元節(jié)點相連。重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板</p><p style="text-indent:25px">真正的REG只需處理STM-N幀中的RSOH，且不需要交叉連接功能（w—e直通即可）。重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板</p><p> SDH的產(chǎn)生背景 </p> <p> SDH技術(shù)的誕生有其必然性，隨著通信的發(fā)展，要求傳送的信息不*是話音，還有文字、數(shù)據(jù)、圖像，和視頻等。加之?dāng)?shù)字通信和計算機(jī)技術(shù)的發(fā)展，在70至80年代，陸續(xù)出現(xiàn)了T1(DS1)／E1載波系統(tǒng)(1.544／2.048Mbps)、X.25幀中繼、ISDN(綜合業(yè)務(wù)數(shù)字網(wǎng)) 和FDDI(光纖分布式數(shù)據(jù)接口)等多種網(wǎng)絡(luò)技術(shù)。隨著信息社會的到來，人們希望現(xiàn)代信息傳輸網(wǎng)絡(luò)能快速、經(jīng)濟(jì)、有效地提供各種電路和業(yè)務(wù)，而上述網(wǎng)絡(luò)技術(shù)由于其業(yè)務(wù)的單調(diào)性，擴(kuò)展的復(fù)雜性，帶寬的局限性，*在原有框架內(nèi)修改或完善已無濟(jì)于事。SDH就是在這種背景下發(fā)展起來的。重慶全新光傳輸設(shè)備烽火8路帶交換功能快速以太網(wǎng)處理板</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司是一家電力設(shè)備、電子元器件、電子產(chǎn)品、建筑材料、通信設(shè)備(中興通訊及華為技術(shù)各系列產(chǎn)品板件及整套設(shè)備的銷售與安裝，設(shè)備維護(hù)及板件返修，以及各設(shè)備可配置的單板，用戶電纜，中繼電纜等)、辦公設(shè)備、五金交電、化工原料（不含危險及監(jiān)控化學(xué)品）的銷售；經(jīng)濟(jì)信息咨詢；經(jīng)營進(jìn)出口業(yè)務(wù)。的公司，致力于成為客戶業(yè)務(wù)創(chuàng)新、通信產(chǎn)品可信賴的合作伙伴。騰云科創(chuàng)深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的[ "SDH光傳輸設(shè)備", "光端機(jī)", "PCM接入設(shè)備", "PTN OTN光傳輸設(shè)備" ]。公司堅持以技術(shù)創(chuàng)新為發(fā)展引擎，以客戶滿意為動力，目前擁有5人以下專業(yè)人員，年營業(yè)額達(dá)到50-100萬元。騰云科創(chuàng)始終關(guān)注通信產(chǎn)品行業(yè)。海納百川，有容乃大，國內(nèi)外同行的智慧都是促使我們前行的力量。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/732172.html</p></div></div></div></div></div><div id="s24awus" class="page-right twoColRt"><div id="aksigec" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="e44ww4g" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="eemcsgm" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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